Samuelson, P. A. &. o. (2010). Economics - 19th Edition. Tata Mc Graw Hill Education Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Samuelson, Paul A. & others. Economics - 19th Edition. New Delhi: Tata Mc Graw Hill Education Pvt. Ltd, 2010.
Lua MLA (9ú heag.)Samuelson, Paul A. & others. Economics - 19th Edition. Tata Mc Graw Hill Education Pvt. Ltd, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.